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Funkin/source/funkin/play/event/ZoomCameraSongEvent.hx
2024-01-26 18:51:36 -07:00

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3.8 KiB
Haxe

package funkin.play.event;
import flixel.tweens.FlxTween;
import flixel.FlxCamera;
import flixel.tweens.FlxEase;
// Data from the chart
import funkin.data.song.SongData;
import funkin.data.song.SongData.SongEventData;
// Data from the event schema
import funkin.play.event.SongEvent;
import funkin.data.event.SongEventSchema;
import funkin.data.event.SongEventSchema.SongEventFieldType;
/**
* This class represents a handler for camera zoom events.
*
* Example: Zoom to 1.3x:
* ```
* {
* 'e': 'ZoomCamera',
* 'v': 1.3
* }
* ```
*
* Example: Zoom to 1.3x
* ```
* {
* 'e': 'FocusCamera',
* 'v': {
* 'char': 2,
* 'y': -10,
* }
* }
* ```
*
* Example: Focus on (100, 100):
* ```
* {
* 'e': 'FocusCamera',
* 'v': {
* 'char': -1,
* 'x': 100,
* 'y': 100,
* }
* }
* ```
*/
class ZoomCameraSongEvent extends SongEvent
{
public function new()
{
super('ZoomCamera');
}
public override function handleEvent(data:SongEventData):Void
{
// Does nothing if there is no PlayState camera or stage.
if (PlayState.instance == null) return;
var zoom:Null<Float> = data.getFloat('zoom');
if (zoom == null) zoom = 1.0;
var duration:Null<Float> = data.getFloat('duration');
if (duration == null) duration = 4.0;
var ease:Null<String> = data.getString('ease');
if (ease == null) ease = 'linear';
// If it's a string, check the value.
switch (ease)
{
case 'INSTANT':
// Set the zoom. Use defaultCameraZoom to prevent breaking camera bops.
PlayState.instance.defaultCameraZoom = zoom * FlxCamera.defaultZoom;
default:
var easeFunction:Null<Float->Float> = Reflect.field(FlxEase, ease);
if (easeFunction == null)
{
trace('Invalid ease function: $ease');
return;
}
FlxTween.tween(PlayState.instance, {defaultCameraZoom: zoom * FlxCamera.defaultZoom}, (Conductor.instance.stepLengthMs * duration / 1000),
{ease: easeFunction});
}
}
public override function getTitle():String
{
return 'Zoom Camera';
}
/**
* ```
* {
* 'zoom': FLOAT, // Target zoom level.
* 'duration': FLOAT, // Optional duration in steps
* 'ease': ENUM, // Optional easing function
* }
* @return SongEventSchema
*/
public override function getEventSchema():SongEventSchema
{
return new SongEventSchema([
{
name: 'zoom',
title: 'Zoom Level',
defaultValue: 1.0,
step: 0.1,
type: SongEventFieldType.FLOAT,
units: 'x'
},
{
name: 'duration',
title: 'Duration',
defaultValue: 4.0,
step: 0.5,
type: SongEventFieldType.FLOAT,
units: 'steps'
},
{
name: 'ease',
title: 'Easing Type',
defaultValue: 'linear',
type: SongEventFieldType.ENUM,
keys: [
'Linear' => 'linear',
'Instant' => 'INSTANT',
'Quad In' => 'quadIn',
'Quad Out' => 'quadOut',
'Quad In/Out' => 'quadInOut',
'Cube In' => 'cubeIn',
'Cube Out' => 'cubeOut',
'Cube In/Out' => 'cubeInOut',
'Quart In' => 'quartIn',
'Quart Out' => 'quartOut',
'Quart In/Out' => 'quartInOut',
'Quint In' => 'quintIn',
'Quint Out' => 'quintOut',
'Quint In/Out' => 'quintInOut',
'Smooth Step In' => 'smoothStepIn',
'Smooth Step Out' => 'smoothStepOut',
'Smooth Step In/Out' => 'smoothStepInOut',
'Sine In' => 'sineIn',
'Sine Out' => 'sineOut',
'Sine In/Out' => 'sineInOut',
'Elastic In' => 'elasticIn',
'Elastic Out' => 'elasticOut',
'Elastic In/Out' => 'elasticInOut',
]
}
]);
}
}